CUISINE-SPECIFIC FIELD GUIDE
American Diner / Burger / Breakfast Conversion Inspection Manual
CUISINE-SPECIFIC LANDMINE
Flat-top + fryer + bacon = heavy grease load; old grease interceptors rarely keep up.
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WHERE THIS CUISINE QUIETLY COSTS YOU MONEY
American Diner / Burger / Breakfast-specific conversion gotchas
01 · Flat-top + char-broiler hood split
Under the mechanical code a flat-top griddle is a medium-duty appliance and a gas char-broiler heavy-duty, and when both share one Type I hood the heaviest-duty appliance sets the exhaust rate for the whole hood (IMC 507; UMC 508.5). Spec the hood to the char-broiler, not the average.
02 · Bacon-grease + interceptor frequency
Bacon grease congeals at room temperature and builds up fast in interceptors. Ask the sewer utility what pump-out schedule its FOG program requires and budget for it (roughly $200–$400/month per interceptor; varies).
03 · Counter seating sight-line + ADA
Classic diners use a long counter with stools — but ADA requires 5% of seating (min 1 seat) be accessible-height with knee clearance. Retrofitting one accessible counter section after the fact typically costs $4K–$8K and breaks the counter line. Design it in from day one.
04 · 24-hour operation = HVAC + lighting upgrades
If the lease allows 24-hour ops, the existing single-zone HVAC will short-cycle through low-occupancy hours, often running the electric bill $1,200+ above baseline. Spec a multi-stage unit or a separate small zone for the late-shift seating area.
05 · Booth upholstery + smoke/grease absorption
Vinyl booths near the open grill absorb grease aerosol — the seams crack and the seat backs yellow. Spec heavy-duty marine-grade vinyl or replan the floor so booths are 8'+ from the cook line.
Five immediate stop signals
These cancel any deal regardless of cuisine.
You smell gas, see burnt wiring, or see blackened / charred hood areas.
The exhaust fan is missing, disconnected, or shaking violently.
The seller refuses to provide hood / fire / grease records.
You must add major cooking equipment outside the existing hood.
The landlord will not allow roof, gas, electrical, or grease-interceptor work.
WALK
Smell, look, listen
PROVE
Hood · gas · electrical · plumbing
PRICE
Written scopes before signing
NEGOTIATE
Or walk away
Defined terms in this guide
The vocabulary worth knowing before you sign.
- Type I Hood
- A grease-rated commercial hood with grease filters and a fire-suppression system, built of steel or stainless steel. The mechanical code requires one where appliances produce grease or smoke (IMC 507; UMC Chapter 5); NFPA 96 sets matching hood, duct and suppression rules.
- Grease Interceptor
- An in-ground or in-line unit that separates fats, oils, and grease (FOG) from kitchen wastewater before it enters the sewer. Sizing follows the adopted plumbing code — rated flow for hydromechanical units, drainage fixture units for gravity interceptors under the UPC — plus the sewer utility’s FOG rules.
- Fats, Oils, and Grease· FOG
- The grease a kitchen sends to its interceptor; wok and fryer-heavy menus send more than a sauté line.
- Americans with Disabilities Act· ADA
- Federal civil-rights law requiring accessible design in public accommodations; its design rules are the 2010 ADA Standards. Building departments separately enforce accessibility through IBC Chapter 11 / ICC A117.1 (California: CBC Chapter 11B).
- Capture Velocity
- The air speed needed at the hood edge to pull in rising cooking effluent. Codes set no single capture-velocity number: unlisted hoods use the mechanical code’s minimum CFM per linear foot (IMC 507), listed hoods their listed airflow, and a capture-and-containment test confirms it.
OTHER CUISINES
18
Fried Chicken / Wings / Quick-Service Fry
Fryer banks mean heavy grease washdown — check the existing grease interceptor against your city's sizing rules before you sign.
14
Deli / Sandwich / Salad / Fast Casual
POS + line speed force a specific cold-table + display-case + heat-lamp geometry from day one.
02
Mexican / Tex-Mex
Comal + plancha lines and tortilla warmers are usually under-vented in inherited TI shells.
Already walking the space?
After your field findings come the permit drawings. We don’t take restaurant jobs ourselves — send us the address and we’ll refer you to a registered architect. We reply within one business day.
Contact
Begin a project.
Studio
Phoenix4435 E Chandler Blvd · Suite 200
Phone
(602) 628-1231Servicios disponibles en español · 中文版本 (602) 628-1231